Finding the Third Proportional to 47,880 and 64,992

Step by Step Solution

1. Step 1: Write the proportion equation
   47,880 : 64,992 = 64,992 : x
2. Step 2: Convert to fraction form
   47,880/64,992 = 64,992/x
3. Step 3: Cross multiply
   47,880x = 64,992 × 64,992
4. Step 4: Simplify right side
   47,880x = 4,223,960,064
5. Step 5: Solve for x
   x = 4,223,960,064/47,880
6. Step 6: Final answer
   x = 88,219.72